I FRAME OR OTHER IDIA

I get site that have information that i need...I want to cover the domain so it will show other domain(my domain) but it will get the data window information for that [login to view URL] site dont belong to me and has information that i want to use for my client used...I dont want my cliant see were the info come...the site information is public site. 1 the site has window to put information 2 you submit and get result in new web page. 3 you submit agian and get finalize it so it will be actually 3 pages that need farme The main idea is that the user will not see were the data come from